### Name: corner.label
### Title: Find corner locations and optionally display a label
### Aliases: corner.label
### Keywords: aplot

### ** Examples

 plot(1:10,1:10)
 corner.label("A")
 corner.label(x=1,y=1)
 corner.label("B",y=-1,x=1,figcorner=TRUE,col="red")



